Air Filter
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Senior User
Joined: Jan 2006
Posts: 100
Likes: 0
From: Northern Nevada
Air Filter
I read with concern the responses about the particulate contamination being let through K+N air filters. I live in dusty Nevada and do quite a bit of off road travelling and was looking for a way to increase my mileage when towing my trailer. I have not heard that K+N filters let in any more particulate than paper filters. if this is the case can I use a K+N on the road and install a foam pre filter when off road in dusty envirnments or am I stuck with the thick paper element? Thanks for all your help.
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
I had a K&N FIPK on my truck and took it off because it always got dirty. I sold it on ebay. I put the K&N replacement panel (drop in) filter back in. I doesn't get nearly as dirty. I noticed that the truck runs better with the K&N than with the paper. The FIPK didn't seem to have any more power than the replacement K&N. It did however make more noise. K&N is supposed to filter better than paper, but I don't know for sure. As you just said running an open element or FIPK with a foam pre filter would work. I do know that a freind of mine did that but noticed a significant power loss with the foam filter on it.
Tuned
Joined: Mar 2003
Posts: 394
Likes: 10
From: austin
I had the regulart K&N replacement ($50) on my old '99 F150 with 4.6L engine. I tracked my mpg from the very first tank the truck ever had until the day I traded it in on a Mustang GT (also 4.6L). I added the K&N at just over 5k miles, and my mpg instantly went up 1 mpg. I cleaned it once (at 30k miles) and then pulled it to put in my new Mustang. Read up on K&N filters, and you'll realize that a slightly dirty K&N is actually MORE efficient than a brand new K&N. I say go for the K&N and just keep an eye on it so it doesn't become so dirty that it's useless (a loaded filter doesn't filter much!)
-Chris
-Chris
Postmaster
Joined: Jan 2003
Posts: 4,417
Likes: 3
From: Durham, NC
Read this test report on air filters. Bottom line, don't throw your money away on the K&N:
http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm
http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm
